Fuse-block.



PATENTED AUG. 25, 1903.

J. SACHS.

FUSE BLOCK.

APPLIGATION FILED MAY 6,19Q2.

N0 MODEL.

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UNITED STATES Iatented August 25, 1903.

PATE T OFFICE.

JOSEPH SACHS, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE JOHNS- PRATTCOMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

FUSE-BLOCK.

SPECIFICATION forming part of Letters Patent No. 737,283, dated August25, 1903.

Application filed May 6, 1902. Serial No. 106,131. (No model.)

To all whom it may concern:

Be it known that I, JOSEPH SACHS, a citizen of the United States,residing at Hartford, in the county of Hartford and State ofConnectiout, have invented an Improvement in Fuse- Blocks, of which thefollowing is a specifica tion.

My invention relates to fuse-blocks, and

particularly to that kind of f use-blocks known I0 as branchfuse-blocks.

Heretofore in branch fuse-blocks it has been customary to make the blocksufficiently large to receive both the main-circuit wires and the fusesfor the branch circuits, and these have been arranged with the fusesabutting the main wires and intervening between the main and branchwires, which structure was not economical of space or material. Thisnecessarily made the block of considerable area,

requiring much wall-space, which isoften inconvenient anddisadvantageous, and particularly is this so in multiwire systems.

My present invention comprises a block of insulating, vitrified, orrefractory material 2 5 which is a support for and receives both themain-circuit wires and the branch fuses, the former preferably passingat right angles and in a different plane to the latter and between thefuse-terminals in the block, which is so formed as to provide therequisite insulation between these parts and the necessary electricalconnection between them, thereby economizing space and providing acompact convenient f use-block.

In carrying out my invention I provide a block of porcelain or othersuitable insulating or vitrified material, preferably having a series ofparallel grooves for receiving the main-circuit wires, the said groovesbeing pro- 4o vided with binding-contacts, to which the main-circuitwires are connected, and series of parallel recesses transversely ofsaid grooves and at both sides thereof, the said recesses being providedwith suitable fuse-terminal contacts, to those of which on one side ofthe block the branch-circuit wires are brought; also, parallel undercutchannels of varying length for wires connecting the maincircuit wireswith the fuse-terminal contacts on the opposite side of the block fromthose sired type to receive the branch-circuit wires to which thebranoh-circuitwires are brought, the branch-circuit fuses extendingbetween the said fuse-terminal contacts and above the main-circuit wiresand preferably at right angles thereto.

In my improved structure the main-line wires are located between theterminals of the branch-circuit fuses and the contacts for the same, andthereby an exceedingly compact and convenient structure is secured.

In the drawings, Figure 1 is a plan of my improved branch fuse-block.Fig. 2 is a side view, and Fig. 3 an end view, of the same. Fig. 4 is asection at a: a: of Fig. 1, and Fig. 5 is a section at y y of Fig. 1.

a represents a fuse-block made of some good insulating or vitrifiedmaterialsuch, for instance, as porcelain. The block a is provided with aseries of grooves or depressions I), having intermediate parallel walls2. 7c The grooves 11 receive the main-circuit wires 3 and are providedwith recesses 4 to receive the binding-contacts c, which make electricalconnection with and secure the main-circuit wires 3 to the block bymeans of the screws 5; Both ends of the block a are preferably providedwith walls or partitions 6, which,

minals e by the screws 15, and the said ter minals are connected tocontacts of any de- 9. Branch-circuit fuses f are snapped into thevarious pairs of clip-contacts d d. The walls 6 are preferably roundedat the top and taper, increasing in thickness toward the bottom, and thewalls 7 may also be tapering and rounded at the top and extend betweenthe walls 6 approximately in the form of an arc of a circle. The walls 6extend above the extreme conducting-points of the clips and all otherconducting members of the fuse-block, I00

the said recesses being formed by series of parallel and transversewalls, the former of which extend above the said clip-contacts as aprotection for the conducting parts of the block, this being animportant feature of my invention.

Each of the contacts 0 is electrically connected to one of thefuse-terminal clip-contacts d in any convenient manner. In the drawingsI have shown the contacts a electrically connected to the metal strips10 by screws 11, the metal strips 10 running along the bottom ofundercut recesses 12 in the back of the base to connect electricallywith the screws 13, which connect with and bind the clip-contacts d tothe block.

I do not wish to limit myself to this form of construction, as theconnections between the main-line wires and the clip-contacts for thebranch-circuit fuses maybe made in other ways with equal utility. Theblock a is provided with holes 14, through which screws may be passed orother suitable means employed for securing the block to the wall. Ifurther do not limit myself to the character of the contacts for thefuses, to the dimensions of the block, or those of the devices formingparts thereof.

I have illustrated a block adapted to be employed in a three-wiresystem; but 'it is apparent that the invention is equally applicable toany number of main or branch circuit wires of any system. The block maybe made single, double, or multibranch and need not necessarily beconstructed of one integral piece of material.

I claim as my invention- 1. A branch fuse-block comprising a base, fusesand terminal-contacts therefor and devices for securing theterminal-contacts to the base, contacts for branch-circuit wiresconnected to certain of the fuse-terminal con-- tacts, means forlocating the main-circuit wires in the base, at right angles to thefuses, between the fuse-terminal contacts and in a different plane tothe fuses, and electric connections between the other of saidfuse-terminal contacts and the means for locating the main-circuitWires, substantially as specified.

2. A branch fuse-block comprising an insulating-base, fuses andterminal-contacts therefor and devices for securing theterminal-contacts to said base, contacts for branchcircuit wiresconnected to certain of the fuse terminal contacts, means for receivingand holding the main-circuit wires to said base at right angles to thefuses, between the fuseterminal contacts and in a different plane to thefuses, and electric connections between the other of said fuse-terminalcontacts and the means for holding the main-circuit wires, substantiallyas specified.

3. In a branch fuse-block, fuses, terminals for the same,terminal-contacts for receiving and holding the terminals of said fuses,devices for connecting and holding the maincircuit wires between thefuse-terminal contacts, connections between the said devices for holdingthe main-circuit Wires to the block and one set of fuse-terminalcontacts, and devices for connecting the branch circuit to the oppositeset of fuse-terminal contacts, substantially as specified.

4. In a branch fuse-block having grooves in which the main-circuit wiresare adapted to pass and recesses arranged side by side'in opposite endsof the block and transversely to said grooves, safety-fuses, terminalclipcontacts secured in said recesses and adapted to receive and holdthe terminals of said fuses, means for connecting and holding themain-circuit wires to the block in said grooves, connections betweensaid main-circuit wires and one set of said terminal clip-contacts, andmeans for electrically connecting the branch circuits to the oppositeset of fuse-terminal clip-contacts, substantially as set forth.

5. In a branch fuse-block having grooves in which the main-circuit wiresare adapted to pass and recesses arranged side by side in opposite endsof the block and transversely to said grooves, safety-fuses,fuse-terminal clip-contacts secured in said recesses and adapted toreceive and hold the terminals of said fuses, binding-contacts in eachof said grooves contacting electrically with the maincircuit wire ineach groove and securing the said wire to the block, electricalconnections from said bindingcontacts respectively to each of the saidterminal clip-contacts at one end of the block and means forelectrically connecting the branch circuit to the terminal clip-contactsat the opposite end of the block, substantially as specified.

6. In a branch fuse-block having grooves in which the main wires areadapted to pass and recesses arranged side by side in opposite ends ofthe block and transversely of said grooves, safety-fuses, clip-contactssecured in said recesses and adapted to receive and hold the terminalsof said fuses, binding-contacts in each of said grooves contactingelectrically with the main-circuit wire in each groove and securing thesaid wire to the block, electrical connections from saidbinding-contacts respectively to each of said clip-contacts at one endof the block, and contacts in electrical connection with the terminalclip-contacts on the opposite end of the block to receive thebranch-circuit wires, substantially as specified.

7. In a branch fuse-block, fuses, terminals for the same,terminal-contacts for receiving and holding the terminals of said fuses,devices for binding the main-circuit wires to and within the said blockand between the fuse-terminal contacts, connections on the block betweenthe said devices for binding the main-circuit wires to the block and oneset of fuse-terminal contacts, and devices for connecting the branchcircuit to the opposite set of fuse-terminal contacts, substantially asspecified.

8. In a branch fuse-block having a series of parallel grooves in whichthe main-circuit wires are adapted to pass and pairs of parallelrecesses arranged side by side in opposite ends of the block andtransversely to said grooves, safety-fuses, clip-contacts secured in 7said recesses and adapted to receive and hold the terminals of saidfuses, means for binding the main-circuit wires to the block in saidgrooves, connections between said main-circuitwires andone setof saidfuse-terminal clipcontacts, and means for electrically connecting thebranch circuits to the opposite set of fuse-terminal clip-contacts,substantially as set forth.

9. In a branch fuse-block'having a series of parallel grooves in whichthe main-circuit wires are adapted to pass and pairs of parallelrecesses arranged side by side in opposite ends of the block andtransversely to said grooves, safety-fuses, clip-contacts secured insaid recesses and adapted to receive and hold the terminals of saidfuses, binding-contacts in each of said grooves contacting electricallywith the main-circuit wire in each groove and securing the said wire tothe block, electrical connections from said binding-contactsrespectively to each of the said clip-contacts at one end of the block,and means for electrically connec'ting the branch circuit to theclipcontacts at the opposite end of the block, substantially asspecified.

10. In a branch fuse-block having a series of parallel grooves in whichthe main wires are adapted to pass and pairs of parallel recessesarranged side by side in opposite ends of the block and transversely ofsaid grooves, safety-fuses, clip-contacts secured in said recesses andadapted to receive and hold the terminals of said fuses,binding-contacts in each of said grooves contacting electrically withthe main-circuit wire in each groove and securing the said wire to theblock, electrical connections from said binding-contacts respectively toeach of said clip-contacts at one end of the block, and contacts inelectrical connection with the clip-contacts on the opposite end of theblock to receive the branchcircuit wires, substantially as specified.

11. In a branch fuse-block, the combination with fuses and a base havingparallel grooves therein adapted to receive the main-circuit wires, ofmeans in said grooves for holding the main-circuit wires to the block,fuse-terminal contacts at either side of said grooves to receive thesaid fuses, Walls partially surrounding and extending above each of saidterminal-contacts, means for connecting the branch-circuit wires to thef use-terminal contacts on one side of said grooves, and means forconnecting the main-circuit wires with the f use-terminal contacts inthe opposite side of the said grooves, substantially as specified.

12. A branch fuse-block provided with a series of parallel walls andintermediate parallel grooves or depressions to receive the main-circuitwires,and upon a different plane, and at right angles to said walls andgrooves with a series of walls or partitions in two groups with seriesof intermediate recesses, and a series of clip devices in the latterrecesses adapted to receive the respective ends of fuse devices whichwhen in place extend over the parallel grooves receiving the maincircuitwires.

13. A branch fuse-block provided with a,

series of parallel walls and intermediate parallel grooves ordepressions to receive the main-circuit wires, and upon a differentplane and at right angles to said walls and grooves with a series ofwalls or partitions in two groups, the outer ones of which come at therespective edges of the block, with series of intermediate recesses anda series of clip devices in the latter recesses adapted to receive therespective ends of fuse devices which when in place extend over theparallel grooves receiving the main-circuit wires.

14. A branch fuse-block provided with a series of parallel walls andintermediate parallel grooves or depressions to receive the main-circuitwires, and upon a different plane and at right angles to said walls andgrooves with a series of Walls or partitions in two groups with seriesof intermediate recesses and other walls 7 intermediate of the latterwalls and parallel with the first-named par= allel walls, and a seriesof clip devices in the latter recesses adapted to receive the respective ends of fuse devices which when in place extend over the parallelgrooves receiving the main-circuit wires. I

Signed by me this 2d day of May, 1902.

JOSEPH SACHS.

Witnesses:

GEO. T. PINCKNEY, BERTHA M. ALLEN.

